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首页> 外文期刊>Journal of Materials Research >Synthesis and characterization of copper-silver core-shell nanowires obtained by electrodeposition followed by a galvanic replacement reaction in aqueous solution; comparison with a galvanic replacement reaction in ionic media
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Synthesis and characterization of copper-silver core-shell nanowires obtained by electrodeposition followed by a galvanic replacement reaction in aqueous solution; comparison with a galvanic replacement reaction in ionic media

机译：通过电沉积然后在水溶液中进行电置换反应获得的铜-银核-壳纳米线的合成和表征；与离子介质中的电置换反应比较

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摘要

Copper-silver core-shell nanowires were synthesized using a combination of two methods: electrodeposition in a polycarbonate membrane as a template for the synthesis of a copper core and a galvanic replacement reaction for the elaboration of a silver shell. A comparative study between aqueous and ionic liquid media was performed for the silver shell elaboration. The kinetics of the reaction in both media was monitored by using energy dispersive x-ray spectroscopy. The shape and size of the nanowires were observed by both scanning electron microscopy and transmission electron microscopy. The core-shell structure was determined by electron energy loss spectroscopy analyses for the Cu_(90)Ag_(10) composition. A homogenous silver shell was formed in aqueous media. Whereas in ionic solvent, well defined silver crystals were obtained at the surface of the nanowires but without a total formation of a silver shell structure.
机译：使用两种方法的组合来合成铜-银核-壳纳米线：在聚碳酸酯膜中电沉积作为合成铜核的模板和电镀置换反应（用于精制银壳）。在水和离子液体介质之间进行了银壳精制的比较研究。通过使用能量色散X射线光谱法监测两种介质中反应的动力学。通过扫描电子显微镜和透射电子显微镜观察纳米线的形状和尺寸。通过电子能量损失谱分析确定Cu_（90）Ag_（10）组成的核-壳结构。在水性介质中形成均匀的银壳。而在离子溶剂中，在纳米线的表面获得了明确定义的银晶体，但是没有完全形成银壳结构。

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  • 来源
    《Journal of Materials Research》 |2015年第22期|3518-3527|共10页
  • 作者

    Samuel Levi; Celine Rousse; Valerie Mancier; Jean Michel; Patrick Fricoteaux;

  • 作者单位

    LISM, EA 4695, Department of Chemistry, UFR Sciences Exactes et Naturelles, Reims-Champagne-Ardenne University, F-51687 Reims, France;

    LISM, EA 4695, Department of Chemistry, UFR Sciences Exactes et Naturelles, Reims-Champagne-Ardenne University, F-51687 Reims, France;

    LISM, EA 4695, Department of Chemistry, UFR Sciences Exactes et Naturelles, Reims-Champagne-Ardenne University, F-51687 Reims, France;

    LRN, EA 4682, Department of Physics, UFR Sciences Exactes et Naturelles, Reims-Champagne-Ardenne University, F-51685 Reims, France;

    LISM, EA 4695, Department of Chemistry, UFR Sciences Exactes et Naturelles, Reims-Champagne-Ardenne University, F-51687 Reims, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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